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Post by Brian on Apr 5, 2017 5:51:32 GMT -8
What 12v.DCM battery is best 4 12v.100w panel with 30 A charge controller what is the most bang for my $
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Post by rabird on Apr 5, 2017 9:43:50 GMT -8
2 x 6v golf car batteries in series. Sams, Costco, Trojan. more robust than 12v deep cycle 4 x 6v golt car batteries in series/parallel. single 12v DC, come in various sizes, smallest is group 24, then 27 the 29 or 31. ~$100 Generally speced in amp hr capacity @ 20hr rate, a group 24 ~ 80ah, 27 ~ 90ah, 29 ~105, 2x6v GC ~220ah 12vDCM should not be discharged over 50% for long life, 2x6v GC can handle deeper discharge but 50% is a good limit for long life. 400 watts may be too much for a 30A controller, which one. 400 watts should make 80ah a day use this calculator to determine how much SUN where you are at, time of year, tilt ... www.solarelectricityhandbook.com/solar-irradiance.htmlbattery maintenance www.trojanbattery.com/tech-support/battery-maintenance/ |
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